Refrigerating attachment for milk-cans.



' s. s-Hfgiflf:IR0. BEFRIGBRATING ATTAHMENT FOR MILK GANS.

APPLIUATION FILED JAN. 8, 1910.

` Patented May 31,1910.

lne/anios SAMUEL SHAPIRO, 0F PHILADELPHIA, PENNSYLVANIA.

REFRIGERATING ATTACHMENT FOR MILK-CANS.

Specification of Letters Patent.

Patented May 31, 1910.

Application filed January 8, 1910. Serial No. 537,042.

To all whom it may concern.'

Be it known that I, SAMUEL SHAPIRO, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in a Refrigerating Attachment for Milk-Cans, of which the following is a specification.

My invention relates to improvements in refrigerating attachments for milk cans, the object of the invention being to provide a hollow, curved, or circular receptacle adapted to contain ice or other refrigerant, and adapted to be supported around the neck or spout of a milk can and rest upon the can, so that the interchange of temperatures between the refrigerating attachment and the milk of the can will keep the milk sweet in transit, and as the refrigerating attachment is located at the top where the cream forms and which is always the first to sour, this cream will be maintained cold and kept from souring.

A further object is to provide an improved attachment of this character which is preferably covered or coated with a paint or covering of non-conducting material, such for example as asbestos paint, and the like, on its outer surfaces; that is, on its upper and outer walls, the two inner walls of the attachment being free from such coating so as to permit a free interchange of temperatures at the inner wall of the attachment, but to prevent, as far as possible, an interchange of temperatures between the outside air and the attachment, thus utilizing to the maximum extent, the cooling properties of the refrigerant in the attachment.

A further object is to provide an improved attachment of this character which can be cheaply manufactured and sold, which can be readily placed upon any ordinary milk can, and which will not take up any additional space in the cars during shipment, and which may be placed in position and removed without difficulty.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts, as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1 is a fragmentary view in side elevation illustrating my improvements in position on a milk can. Fig. 2 is a view in longitudinal section of Fig. 1. Fig. 3 is an enlarged fragmentary view in vertical section. Fig. 4 is a plan view of the attachment removed, and Figs. 5 and 6 are views in section and top plan, illustrating a modified form of my invention.

1 represents an ordinary milk can having the outwardly flaring neck 2.

3 is the ordinary cover of the can and 4 the handles at the sides of the can.

My improved attachment illustrated in Figs. 1, 2, 3, and 4, comprises two halfsections 6, 6, each half-section comprising a semi-circle and the sections connected at one end by a hinge 7 and at their other end by a hook 8 and an eye 9, or other suitable fastener.

It will be noted particularly by reference to Fig. 2, that the inner walls 10 of the sections 6, 6, incline at their upper portions to conform to the shape of the outwardly fiaring neck 2, while the outer walls 11 of' the sections 6, 6, are vertical and in line substantially with the vertical walls of the can, so that when the attachment is in position on the can it does not take up any additional room in the car, but allows just as many cans to be shipped in the car as could be done without the attachment. These sections 6, 6, are hollow as illustrated, and are preferably made of metal with a coating 12 of varnish or paint of the non-conducting type, on the outer faces of the vertical and top walls of the sections 6, 6, and the outside air. The top walls of these sections 6, 6, are made with screw threaded inwardly projecting rings 13, having inwardly projecting anges 14 at their inner ends and plugs 15 adapted to screw into the rings 13 and against gaskets 16 interposed between the plugs 15 and the flanges 14, so as to form a perfectly air tight closure, it being' understood that these rings 16 serve as entrances through which the ice, or other suitable refrigerant, is to be inserted to fill the chambers in the sections. The plug 15 is preferably recessed as shown, to form a finger hold 17 to facilitate its manipulation, and preferably when in place, lies flush with the upper face of the sections, so as to prevent its becoming injured by an object striking the same.

When the hook 8 is thrown back, out of the eye 9, the attachment can be readily removed from the can by swinging the sections 6, 6, on hinge 7, and the sections can be recharged with ice, or other refrigerant, and of the cover, constituting an annular and can be quickly placed in position around refrigerant chamber, and constructed to be another can, and as above stated, the interpositioned around the neck of an ordinary 45 change of temperatures between the refrigmilk can, substantially as described. 5 erant and the milk will maintain the milk 2. An attachment for milk cans, compriscold and keep it from souring in transit. ing a can neck conning ring consisting of In Figs. and G a modification is shown, two semi-circular sections, each section conin which the attachment 18 is in the form stituting a refrigerant chamber, said see- 50 of a single ring not made in sections as is tions connected at one end by a hinge, a

lo the preferred form, and this modified strucfastening device at the other ends of said ture is only adapted for use where the old sections, and removable plugs in the walls style of comparatively straight spout 19 is of said chamber, closing entrances to the provided on the can, but where the flaring chambers, substantially as described. 55 mouth such as at 2 is employed, a sectional 3. An attachment for milk cans, comprisattachment is advisable. ing a can neck confining ring consisting of wWith both forms of my improvements, it two semi-circular sections,ahinge connecting will be noted that the external diameter of said sections at one end, a hook and eye conthe attachment is the same as the external necting said sections at the other end, each 60 diameter of the can, so that the cans can be section comprising a hollow refrigerant re- 20 packed as close together heretofore, and ceiving chamber', removable plugs normally no more space utilized than heretofore, and closing entrances to said chambers, and the by charging attachment with small pieces of inner walls of said sections shaped to conice as illustrated at 2O in the drawings, the form to the flaring spouts or neck portions 65 milk in the can may be kept cool for a long of the ordinary milk cans, substantially as time, long enough for any ordinary shipdescribed.

nient. YWhile I preferably use ice as a re- 4. In combination with a milk can, havfrigerant, I do not limit myself to the same, :ing a restricted neck and a cover on the but may employ any refrigerant which upper end of said neck, of a refrigerating 70 might be used for the purpose. ring positioned around the neck below the Various slight changes might be made in cover, and bearing upon the upper end of the general form and arrangement of the the can, said ring comprising two half secparts described without departiiig from my tions hinged together at one end and reinvention, and hence I do not restrict mymovably connected at their other ends, each 75 self to the precise details set forth, but consection constituting a refrigerant chamber,

sider myself at liberty to make such changes substantially as described.

and alterations as fairly fall within the In testimony whereof I have signed my spirit and scope of the appended claims. name to this specification in the presence of Having thus described my invention what two subscribing witnesses. I claim as new and desire to secure by Let- SAMUEL SHAPIRO.

.30 ters Patent is lVitnesses:

l. An attachment for milk cans, compris- BEATRICE HERMAN, ing a circular ring independent of the can R. H. KRENKEL. 

